Auxiliary valve stem guide



May 30, 1933. F. c. EISENHUTH AUXILIARY VALVE STEM GUIDE Original FiledFeb. 27, 1930 2 Sheets-Sheet l May 30, 1933.

F. e. EISENHUTH AUXILIARY VALVE STEM GUIDE Original Filed Feb. 27, 19502 Sheets-Sheet 2 [n ventor 'jzsezaZ/wfb FQl valve guide in its finalposi Patented May 30, 1933 r ArNr FRED G. EISENHUTH, OF UTICA, NEW YORKAUXILIARY VALVE STEM GUIDE Refiled for abandoned application Serial No.431,893, filed February 27, 1930. This application filed October 25,1932.,

This application is a substitute for my application Serial Number431,898, filed February 27, 1980, which was allowed June 18, 1931, andbecome forfeited and aban- 1 doned. This invention relates broadly toin- Heretofore, the auxiliary valve stem guide used in the operation ofgrinding valves preferably consisted of a pair of sections engaging thevalve stem and held in place by the valve spring which spring in turnwas locked by a washer having a tapered hole to prevent the washer fromslipping over the enlarged end of the valve stem.

As comprehended by the present invention, the auxiliary valve stem isformed of one piece, is of simple construction, can be readily engagedwith the valve stem and readily disposed in the valve stem guide bore ofthe engine block for retaining the valve in position during the grindingoperation. v

Other objects and advantages of the in- 4 vention will become apparentduring a study of the following description, taken in connection withthe accompanying drawings wherein: Figure 1 is a fragmentary detailsectional 3 view taken through the cylinderblock, the valve shown inseated position, the guide stem not shown. 7

Figure 2 is a similar View of my improved auxiliary stem guide beingillustrated as to its use.

. Figure 3 is a perspective view of the auxilary guide per se.

Figure 4 is an elevational view of a barrel, and the auxiliary guideillustrating the 7 first step in engaging the guide with the valve stem.

Figure 5 is a similar View illustrative of the second step in theoperation.

Figure 6 is a similar view showing the Serial No. 639,513. 1

Figure 7 is a side elevational view of the guide with partsbrokcn awayfor showing the spring actuated valve stem engaging member for retainingthe uide in position shown in Figure 6.

Figure 8 is a top plan view of the auxiliary guide.

With reference more in detail to the drawings, it will be seen that Ihave designated the cylinder block of the internal combustion engine bythe reference character 1, the .valve seat by the reference character 5,the valve push rod being designated at 6 and the push rod guidedesignated general ly by the reference character 7 and the guidereceiving bore by the. reference character 8.

The valve is designated generally by the reference character 9 andthestem of the valve by'the reference character 10. In regard to thevalve, it is to be noted that the stem 10 atthe lower free end thereofengageable by the push rod 6 is enlarged. At this time it may be well.to mention that the type of valve illustrated is now common to the newModel A Ford engine and, in providing a guide for the valve stem forgrinding of the valve, these auxiliary guides have, as set forth in thestatement of the invention, heretofore been constructed of sectionsembracing the stem and clamped together about the stem through themedium of the valve spring which spring, in turn, is locked by a washerhaving a tapered hole corresponding to the tapered or enlarged end ofthe valve stem whereby thewasher is retained against slipping oif thelower end of the stem.

Asshown to advantage in Figures 2 to 8, inclusive, the auxiliary valvestem guide comprehended by the present invention is formed in one pieceand may be formed of any suitable metal. Thus it will be seen that theauxiliary valve stem guide comprises a cylindrical body ll formed at oneend with an enlarged annular head 12, the body 11 adapted to fit snuglywithin the bore 8 with the head 12 supported at the upper end of thebore as clearly suggested in Figure 2. I r

The body 11 has a longitudinally extending valve stem receiving bore 13extending therethrough and through the head 12. Intermediate its ends,the body 11 is provided with a transverse opening 14 opening into thebore 13 and adapted to initially receive the valve stem, as shown toadvantage in Figure 4.

Further, the body is provided with diametrically opposite lateralopenings 15 and 16, respectively, opening to the bore, as

clearly suggested in Figure 3. The enlarged head 12 is also providedwith a radial notch or opening 17 communicating with the bore and inlongitudinal alinement with the opening 16.

As shown to advantage in Figure '7, the head 12 is also provided with ahorizontal bore 18 opening at one end into the notch or opening 17.Threaded in the other end of the bore 18 is a plug or nut 19 and aspring 20 is arranged in the bore 18 and has one end impinging againstthe plug 19 and the other end is secured to the ball 21 for normallyurging the ball outwardly of the adjacent end of the bore 18 into theopening 17 for a purpose hereinafter fully made manifest.

As shown to advantage in Figures 4 to 6, inclusive, when using theauxiliary valve stem guide comprehended by the present invention for usein grinding valves, it will be seen that an intermediate portion of thevalve stem 10 is disposed first, as shown in Figure ifinto thetransverse opening 14 to be received in the valve stem receiving bore 13after which the auxiliary guide is rotated on an axis perpendicular tothe axis of the valve stem as clearly suggested in Figure 5 so that theupper portion of the valve stem will enter the bore 13 through thelateral opening la in the body 11 and lateral opening 17 in the head 12,while a lower portion of the stem will enter into the lower end of thebore 13 through the lateral opening 15 until the stem 10 and auxiliaryguide are in that position shown in Figure 6. When in this last-referredto position, it is obvious that the ball 21 under action of the spring20 will bear against an adjacent portion of the stem 10 for retainingthe stem and guide in said position.

Without some such means as a springpressed ball '21, it is obvious thatdue to the weight of the headed end of the body the guide would have thetendency to assume that position shown in Figure 5.

The auxiliary valve stem guide being arranged on the stem in the mannersuggested in Figure 6, the stem may be then inserted through the bore 8and the valve 9 then seated as clearly suggested in Figure 2. Obviously,when in this position, the guide will drop downwardly through the bore 8so that the head 12 will rest in the recess at the upper end of thebore.

From the foregoing, taken in connection with the accompanying drawings,it will be seen that I have provided a thoroughly reliable, practicaland eflicient auxiliary valve stem guide fully capable of retaining thevalve in suitable position during grinding operation, and that the valvestem guide is complete in one piece.

Even though I have herein shown and described the preferred embodimentof the invention, it is to be understood that the same is susceptible tochanges fully comprehended by the spirit of the invention as hereindescribed, also the appended claims.

What is claimed is:

1. An auxiliary valve stem guide comprising a body having alongitudinalvalve stem receiving bore and a transverse opening throughwhich the valve stem is initially introduced into the bore, said bodybeing further provided with oppositely disposed lateral openings throughwhich the stem enters the bore as the guide is rotated about an axisperpendicular to the axis of the valve stem.

2. An auxiliary valve stem guide comprising a body having a longitudinalvalve stem receiving bore and a transverse opening through which thevalve stem is initially introduced into the bore, said body beingfurther provided with oppositely disposed lateral openings through whichthe stem enters the bore as the guide is rotated about an axisperpendicular to the axis of the valve stem, said body having anenlarged head on one end thereof, said head having a pocket therein, anda spring pressed ball normally urged outwardly of the pocket forengagement with the valve stem.

3. An auxiliary valve stem guide for use in the grinding of valves, andcomprising a headed cylindrical body having'a longi-' tudinal stemreceiving bore, said body on diametrically opposite sides thereofprovided with lateral openings respectively extending for a portion ofthe length of the body, said body being further provided with atransverse opening connecting said lateral openings.

4. A valve stem guide comprising a cylindrical body having alongitudinal stem accommodating bore opening laterally of the bodylongitudinally on opposite sides of the body and transversely on a thirdside of the body, said body being insertable into the bore of the engineblock, and a spring pressed element mounted in the body and normallyprojected into the stem receiving bore of the body for frictionalengagement with the stem of the valve.

In testimony whereof I afiix my signature.

FRED G. EISENHUTH.

